Question

sa se determine multimile A si B astfel incat sa fie indeplinite simultan conditiile: A U B={1,2,3,4,5,6,7,8} ; A intersectat B={4,5,6} ; A-B={1,2,3}

Answer 1

A={1;2;3;4;5;6}
B={4;5;6;7;8}

Answer 2

Din  a   2  a   relatie rezulta {4,5,6}⊂A   SI  {4,5,6}⊂B
Din  a    3-a   relatie=.>{1,2,3}⊂A si{1,2,3}⊄B
dECI   a={1,2,3}u{4,5,6}={1,2,3,4,5,6}
dEOARECE    {7,8}⊂AUB=>
{7,8}⊂B=>
B={4,5,6,}U{7,8}={4,5,6,7,8}